Chair



FIG. 1 is a front view of a chair showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof; and

FIG. 5 is a right side elevation view thereof, the left side being identical to the right side. 

The ornamental design for a chair, as shown and described. 